package com.sky.backend.exception;public enum  ExceptionEnum implements IException {    SUCCESS("20000","成功"),    SYSTEM_ERROR("99999", "系统异常"),    NOT_FOUND_USER("20001", "用户不存在"),    TOKEN_NOT_VALID("20002", "无效token"),    TOKEN_EXPIRED("20003", "token过期");    ExceptionEnum(String code, String msg) {        this.code = code;        this.msg = msg;    }    private String code;    private String msg;    @Override    public String getCode() {        return code;    }    public void setCode(String code) {        this.code = code;    }    @Override    public String getMsg() {        return msg;    }    public void setMsg(String msg) {        this.msg = msg;    }}